Wasala Mudiyanselage Nilantha Piyasiri Wed, 12 Dec 2001 09:35:44 -0800

following servlet gives a errornull message. Please help me to overcome.

Regards

Nilantha

import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.util.*;

public class cartExample extends HttpServlet{
    HttpSession session = null;

    public void doPost (HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{
        try {response.setContentType("text/html");
        PrintWriter out = new PrintWriter (response.getOutputStream());
        out.println("<html>");
        out.println("<head><title>Servlet</title></head>");
        out.println("<body>");
        out.println ("Here are the ordered Items");

        session = request.getSession(true);

        Integer itemcount = (Integer) session.getValue("itemcount");

        if (itemcount == null){
            itemcount = new Integer(0);
        }

        String [] selected = request.getParameterValues("item");
        System.out.println (selected.length);
        if (selected != null){
            for (int i= 0; i<selected.length; i++){
                if (selected[i]!=null){
                    String name = selected [i];
                    System.out.println ("not null");
                    itemcount = new Integer (itemcount.intValue()+1);
                    session.putValue(Integer.toString(i).trim(),new String(name));
                }
            }

            session.putValue("item count", itemcount);
        }

        System.out.println (itemcount.intValue());
        out.println("The products are");
        for (int i=0; i <itemcount.intValue(); i++){
            if (session.getValue(Integer.toString(i).trim())!=null){
                String item = (String) session.getValue(Integer.toString(i).trim());
                out.print ("<p>" + item);
            }
        }
        out.println ("</body></html>");
        out.close();
    }

    catch(Exception e){
        System.out.println ("error" + e.getMessage());
    }
}
    public void destroy (){
        session = null;
    }
}

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